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Aallegra.145 net.general utzoo!decvax!ucbvax!ARPAVAX:mhtsa!allegra!bill Thu Dec 10 23:59:05 1981 track ball inquiry Does anyone know of a commercial source that produces track balls? We're contemplating some experiments comparing one to a mouse for the purposes of cursor manipulation in an editor. Any pointers at all will be appreciated (and will save us lots of time making one ourselves). Also, pointers to information about experiments of this kind will also be appreciated.

-Bill Schell (ucbvax!allegra!bill)

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